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Security Advisory - Denial of Service Vulnerability in Huawei Smart WiFi Router

  • SA No:huawei-sa-DoSViHSWR-8f632df1-en
  • Initial Release Date: 2022-12-08
  • Last Release Date: 2022-12-08

There is a denial of service vulnerability in the Wi-Fi module of the HUAWEI WS7100-20 Smart WiFi Router.Successful exploit could cause a denial of service (DoS) condition. (Vulnerability ID:HWPSIRT-2022-59488)
This vulnerability has been assigned a (CVE) ID: CVE-2022-46740

Affected Product

Affected Version

Resolved Version




Successful exploit could cause a denial of service (DoS) condition.
Vulnerabilities are scored base on the CVSS v3.1 scoring system. For details please refer to:
Base score:4.3
Temporary score:4.0
Environmental Score:NA
CVSS v3.1 Vector: AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:F/RL:O/RC:C
This vulnerability can be exploited only when the following conditions are present:
An attacker could send a crafted message to the device.
Technical details:
There is a denial of service vulnerability in the Wi-Fi module of the HUAWEI WS7100-20 Smart WiFi Router. Due to incorrect verification of external messages, An attacker can exploit this vulnerability by sending crafted packets to the device.Successful exploitation of this vulnerability may cause a denial of service vulnerability on the WS7100-20.

The product that supports automatic update will receive a system update prompt. You can install the update to fix the vulnerability.

The vulnerability was discovered by external researchers Vyron Kampourakis and Efstratios Chatzoglou.

2022-12-09 V1.1 Updated "Source";
2022-12-08 V1.0 Initial Release;

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